Use of belly chain
Such restraints are often used in the United States in courtrooms, or for transporting prisoners, or in other public situations as a safeguard against escape. They are used above all when detainees are to be restrained over a longer period of time, for example during transport or at court hearings.
Beside above, what is belly button jewelry called?
navel barbells
Secondly, do all belly button rings unscrew?
Though less common, some belly button rings unscrew if you turn them clockwise. Gently test the ring to determine which way to turn the ball. Remove the ball from the end of the ring once you have fully unscrewed it.